— John Maynard KeynesReply to a criticism during the Great Depression of having changed his position on monetary policy, as quoted in "The Keynes Centenary" by Paul Samuelson, in The Economist Vol. 287 (June 1983), p. 19; later in The Collected Scientific Papers of Paul Samuelson, Volume 5 (1986), p. 275; also in Understanding Political Development: an Analytic Study (1987) by Myron Weiner, Samuel P. Huntington and Gabriel Abraham Almond, p. xxiv; this has also been paraphrased as "When the facts change, I change my mind. What do you do, sir?"

— John Maynard KeynesNot attributed to Keynes until after his death. The original quote comes from Carveth Read and is:
It is better to be vaguely right than exactly wrong.
Logic, deductive and inductive (1898), p. 351 [http://www.gutenberg.org/files/18440/18440-h/18440-h.htm#Page_351]

— John Maynard KeynesContext: When the accumulation of wealth is no longer of high social importance, there will be great changes in the code of morals. We shall be able to rid ourselves of many of the pseudo-moral principles which have hag-ridden us for two hundred years, by which we have exalted some of the most distasteful of human qualities into the position of the highest virtues. We shall be able to afford to dare to assess the money-motive at its true value. The love of money as a possession — as distinguished from the love of money as a means to the enjoyments and realities of life — will be recognised for what it is, a somewhat disgusting morbidity, one of those semi-criminal, semi-pathological propensities which one hands over with a shudder to the specialists in mental disease … But beware! The time for all this is not yet. For at least another hundred years we must pretend to ourselves and to everyone that fair is foul and foul is fair; for foul is useful and fair is not. Avarice and usury and precaution must be our gods for a little longer still. For only they can lead us out of the tunnel of economic necessity into daylight.
as quoted in [http://www.webcitation.org/query?id=1256603608595872&url=www.geocities.com/monedem/keyn.html "Keynes and the Ethics of Capitalism" by Robert Skidelsy]

— John Maynard KeynesContext: When the accumulation of wealth is no longer of high social importance, there will be great changes in the code of morals. We shall be able to rid ourselves of many of the pseudo-moral principles which have hag-ridden us for two hundred years, by which we have exalted some of the most distasteful of human qualities into the position of the highest virtues. We shall be able to afford to dare to assess the money-motive at its true value. The love of money as a possession — as distinguished from the love of money as a means to the enjoyments and realities of life — will be recognised for what it is, a somewhat disgusting morbidity, one of those semi-criminal, semi-pathological propensities which one hands over with a shudder to the specialists in mental disease … But beware! The time for all this is not yet. For at least another hundred years we must pretend to ourselves and to everyone that fair is foul and foul is fair; for foul is useful and fair is not. Avarice and usury and precaution must be our gods for a little longer still. For only they can lead us out of the tunnel of economic necessity into daylight.
as quoted in [http://www.webcitation.org/query?id=1256603608595872&url=www.geocities.com/monedem/keyn.html "Keynes and the Ethics of Capitalism" by Robert Skidelsy]

— John Maynard KeynesContext: I have sought with some touches of detail to bring out the solidarity and historical continuity of the High Intelligentsia of England, who have built up the foundations of our thought in the two and a half centuries, since Locke, in his Essay Concerning Human Understanding, wrote the first modern English book. I relate below the amazing progeny of Sir George Villiers. But the lineage of the High Intelligentsia is hardly less interbred and spiritually inter-mixed. Let the Villiers Connection fascinate the monarch or the mob and rule, or seem to rule, passing events. There is also a pride of sentiment to claim spiritual kinship with the Locke Connection and that long English line, intellectually and humanly linked with one another, to which the names in my second section belong. If not the wisest, yet the most truthful of men. If not the most personable, yet the queerest and sweetest. If not the most practical, yet of the purest public conscience. If not of high artistic genius, yet the most solid and sincere accomplishment within many of the fields which are ranged by the human mind.
p. viii

— John Maynard KeynesContext: Economists must leave to Adam Smith alone the glory of the Quarto, must pluck the day, fling pamphlets into the wind, write always sub specie temporis, and achieve immortality by accident, if at all.
p. 212

— John Maynard KeynesContext: The boys, who cannot grow up to adult human nature, are beating the prophets of the ancient race — Marx, Freud, Einstein — who have been tearing at our social, personal and intellectual roots, tearing with an objectivity which to the healthy animal seems morbid, depriving everything, as it seems, of the warmth of natural feeling. What traditional retort have the schoolboys but a kick in the pants?...
To our generation Einstein has been made to become a double symbol — a symbol of the mind travelling in the cold regions of space, and a symbol of the brave and generous outcast, pure in heart and cheerful of spirit. Himself a schoolboy, too, but the other kind — with ruffled hair, soft hands and a violin. See him as he squats on Cromer beach doing sums, Charlie Chaplin with the brow of Shakespeare...
So it is not an accident that the Nazi lads vent a particular fury against him. He does truly stand for what they most dislike, the opposite of the blond beast — intellectualist, individualist, supernationalist, pacifist, inky, plump... How should they know the glory of the free-ranging intellect and soft objective sympathy to whom money and violence, drink and blood and pomp, mean absolutely nothing? Yet Albert and the blond beast make up the world between them. If either cast the other out, life is diminished in its force. When the barbarians destroy the ancient race as witches, when they refuse to scale heaven on broomsticks, they may be dooming themselves to sink back into the clods which bore them.
Collected Writings volume xxviii pages 21-22

— John Maynard KeynesContext: The boys, who cannot grow up to adult human nature, are beating the prophets of the ancient race — Marx, Freud, Einstein — who have been tearing at our social, personal and intellectual roots, tearing with an objectivity which to the healthy animal seems morbid, depriving everything, as it seems, of the warmth of natural feeling. What traditional retort have the schoolboys but a kick in the pants?...
To our generation Einstein has been made to become a double symbol — a symbol of the mind travelling in the cold regions of space, and a symbol of the brave and generous outcast, pure in heart and cheerful of spirit. Himself a schoolboy, too, but the other kind — with ruffled hair, soft hands and a violin. See him as he squats on Cromer beach doing sums, Charlie Chaplin with the brow of Shakespeare...
So it is not an accident that the Nazi lads vent a particular fury against him. He does truly stand for what they most dislike, the opposite of the blond beast — intellectualist, individualist, supernationalist, pacifist, inky, plump... How should they know the glory of the free-ranging intellect and soft objective sympathy to whom money and violence, drink and blood and pomp, mean absolutely nothing? Yet Albert and the blond beast make up the world between them. If either cast the other out, life is diminished in its force. When the barbarians destroy the ancient race as witches, when they refuse to scale heaven on broomsticks, they may be dooming themselves to sink back into the clods which bore them.
Collected Writings volume xxviii pages 21-22

— John Maynard KeynesContext: Leninism is a combination of two things which Europeans have kept for some centuries in different compartments of the soul — religion and business. We are shocked because the religion is new, and contemptuous because the business, being subordinated to the religion instead of the other way round, is highly inefficient.